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stack addr align to 8byte. 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2509 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
wuyangyong 2012-12-23 07:40:31 +00:00
parent 728064a45b
commit 5be0c53dd8
3 changed files with 196 additions and 159 deletions
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17
libcpu/arm/cortex-m0/cpuport.c
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@ -1,7 +1,7 @@
/*
* File : cpu.c
* File : cpuport.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2009, RT-Thread Development Team
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
@ -12,6 +12,7 @@
* 2010-01-25 Bernard first version
* 2012-05-31 aozima Merge all of the C source code into cpuport.c
* 2012-08-17 aozima fixed bug: store r8 - r11.
* 2012-12-23 aozima stack addr align to 8byte.
*/
#include <rtthread.h>
@ -59,16 +60,19 @@ rt_uint32_t rt_thread_switch_interrupt_flag;
*
* @return stack address
*/
rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
rt_uint8_t *stack_addr, void *texit)
rt_uint8_t *rt_hw_stack_init(void *tentry,
void *parameter,
rt_uint8_t *stack_addr,
void *texit)
{
struct stack_frame * stack_frame;
rt_uint8_t * stk;
unsigned long i;
stk = stack_addr + sizeof(rt_uint32_t);
stk = (rt_uint8_t*)RT_ALIGN_DOWN((rt_uint32_t)stk, 8);
stk -= sizeof(struct stack_frame);
stack_frame = (struct stack_frame *)stk;
/* init all register */
@ -92,6 +96,9 @@ rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
extern long list_thread(void);
extern rt_thread_t rt_current_thread;
/**
* fault exception handling
*/
void rt_hw_hard_fault_exception(struct exception_stack_frame* contex)
{
rt_kprintf("psr: 0x%08x\n", contex->psr);

80
libcpu/arm/cortex-m3/cpuport.c
View File

@ -1,7 +1,7 @@
/*
* File : cpuport.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2011, RT-Thread Development Team
* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
@ -12,12 +12,12 @@
* 2009-01-05 Bernard first version
* 2011-02-14 onelife Modify for EFM32
* 2011-06-17 onelife Merge all of the C source code into cpuport.c
* 2012-12-23 aozima stack addr align to 8byte.
*/
#include <rtthread.h>
/* stack context */
struct stack_context
struct exception_stack_frame
{
rt_uint32_t r0;
rt_uint32_t r1;
@ -29,39 +29,67 @@ struct stack_context
rt_uint32_t psr;
};
struct stack_frame
{
/* r4 ~ r11 register */
rt_uint32_t r4;
rt_uint32_t r5;
rt_uint32_t r6;
rt_uint32_t r7;
rt_uint32_t r8;
rt_uint32_t r9;
rt_uint32_t r10;
rt_uint32_t r11;
struct exception_stack_frame exception_stack_frame;
};
/* flag in interrupt handling */
rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
rt_uint32_t rt_thread_switch_interrupt_flag;
/**
* initializes stack of thread
* This function will initialize thread stack
*
* @param tentry the entry of thread
* @param parameter the parameter of entry
* @param stack_addr the beginning stack address
* @param texit the function will be called when thread exit
*
* @return stack address
*/
rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter,
rt_uint8_t *stack_addr, void *texit)
rt_uint8_t *rt_hw_stack_init(void *tentry,
void *parameter,
rt_uint8_t *stack_addr,
void *texit)
{
unsigned long *stk;
struct stack_frame *stack_frame;
rt_uint8_t *stk;
unsigned long i;
stk = (unsigned long *)stack_addr;
*(stk) = 0x01000000L; /* PSR */
*(--stk) = (unsigned long)tentry; /* entry point, pc */
*(--stk) = (unsigned long)texit; /* lr */
*(--stk) = 0; /* r12 */
*(--stk) = 0; /* r3 */
*(--stk) = 0; /* r2 */
*(--stk) = 0; /* r1 */
*(--stk) = (unsigned long)parameter; /* r0 : argument */
stk = stack_addr + sizeof(rt_uint32_t);
stk = (rt_uint8_t*)RT_ALIGN_DOWN((rt_uint32_t)stk, 8);
stk -= sizeof(struct stack_frame);
*(--stk) = 0; /* r11 */
*(--stk) = 0; /* r10 */
*(--stk) = 0; /* r9 */
*(--stk) = 0; /* r8 */
*(--stk) = 0; /* r7 */
*(--stk) = 0; /* r6 */
*(--stk) = 0; /* r5 */
*(--stk) = 0; /* r4 */
stack_frame = (struct stack_frame *)stk;
/* init all register */
for (i = 0; i < sizeof(struct stack_frame) / sizeof(rt_uint32_t); i ++)
{
((rt_uint32_t *)stack_frame)[i] = 0xdeadbeef;
}
stack_frame->exception_stack_frame.r0 = (unsigned long)parameter; /* r0 : argument */
stack_frame->exception_stack_frame.r1 = 0; /* r1 */
stack_frame->exception_stack_frame.r2 = 0; /* r2 */
stack_frame->exception_stack_frame.r3 = 0; /* r3 */
stack_frame->exception_stack_frame.r12 = 0; /* r12 */
stack_frame->exception_stack_frame.lr = (unsigned long)texit; /* lr */
stack_frame->exception_stack_frame.pc = (unsigned long)tentry; /* entry point, pc */
stack_frame->exception_stack_frame.psr = 0x01000000L; /* PSR */
/* return task's current stack address */
return (rt_uint8_t *)stk;
return stk;
}
extern long list_thread(void);
@ -69,7 +97,7 @@ extern rt_thread_t rt_current_thread;
/**
* fault exception handling
*/
void rt_hw_hard_fault_exception(struct stack_context* contex)
void rt_hw_hard_fault_exception(struct exception_stack_frame* contex)
{
rt_kprintf("psr: 0x%08x\n", contex->psr);
rt_kprintf(" pc: 0x%08x\n", contex->pc);

2
libcpu/arm/cortex-m4/cpuport.c
View File

@ -14,6 +14,7 @@
* 2011-12-31 aozima fixed stack align issues.
* 2012-01-01 aozima support context switch load/store FPU register.
* 2012-12-11 lgnq fixed the coding style.
* 2012-12-23 aozima stack addr align to 8byte.
*/
#include <rtthread.h>
@ -106,6 +107,7 @@ rt_uint8_t *rt_hw_stack_init(void *tentry,
unsigned long i;
stk = stack_addr + sizeof(rt_uint32_t);
stk = (rt_uint8_t*)RT_ALIGN_DOWN((rt_uint32_t)stk, 8);
stk -= sizeof(struct stack_frame);
stack_frame = (struct stack_frame *)stk;